The periodic table/Cesium

From Wikiversity
Jump to navigation Jump to search
Nuvola apps edu science.svg Subject classification: this is a chemistry resource.
Tulliana launch.png Completion status: this resource is just getting off the ground. Please feel welcome to help!
38254-new folder-12.svg Type classification: this is an article resource.
Nuvola apps edu science.svg Educational level: this is a research resource.

Cesium (US), or caesium, is a chemical element.

Discovery[edit | edit source]

Kirchhoff and Bunsen

Two German scientists (Gustav Kirchhoff and Robert Bunsen), in 1860, discovered Cesium in samples of mineral water in Bad Dürkheim, a spa town in Germany. Because of two blue lines from its emission spectrum, they chose the name, caesius, which is Latin for "sky blue".

Quick Facts[edit | edit source]

Name: Cesium

Symbol: Cs

Date of Discovery: 1860

Discoverer: Fustov Kirchoff

Atomic number: 55

Atomic Mass: 132.90546 amu

Classification: Alkaline Metal

Protons: 55

Electrons: 55

Neutrons: 78

Color: Silver

Crystal Structure: Cubic

Melting Point: 28.5 °C

Boiling Point: 678.4 °C

See also[edit | edit source]

Wikipedia-logo.png Search for Cesium on Wikipedia.
18 column periodic table, with Lu and Lr in group 3.png

This element is a stub. Learn how you can help Wikiversity to expand it. (See other stubs here)